I'm in Central Maryland and about to start building my run. The only available place in my yard is an 8' x 22' strip of concrete. My coop is a converted wood storage shed that is 5' x 8'. I don't have great drainage in that area but will be implementing some plans including a perforated drain that should help (but maybe not totally solve) rainwater collecting on parts of the pad. The coop right now has a wood floor about 6" off the ground. I wanted to remove that floor and have the litter start on the ground (with dirt from my yard as the base) so that there is a natural lip at the doorway. My husband thinks I should leave the elevated wood floor and add a board to hold in the litter because water will seep in the sides and sweep away bedding or just make it a wet mess. One of my concerns is that it will be too much for me to try to climb in there to scrape poop boards or whatever I might have to do. Anyone able to chime in with some concrete deep litter method experience?